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PRINCIPAL ACCOUNTING POLICIES - Summary financial information of the VIEs (Details) ¥ in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 CNY (¥) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 CNY (¥) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2022 USD ($) | Dec. 31, 2019 CNY (¥)
Financial information of the group's VIEs |  |  |  |  |  |
Cash and cash equivalents | ¥ 17,000 |  | ¥ 19,818 |  | $ 2,465 | ¥ 19,900
Short-term investments | 25,545 |  | 29,566 |  | 3,703 |
Accounts receivable, net | 5,486 |  | 4,649 |  | 795 |
Prepayments and other current assets | 10,169 |  | 9,032 |  | 1,475 |
Total assets | 191,691 |  | 191,859 |  | 27,793 |
Short-term debt | 4,100 |  |  |  |  |
Accounts payable | 7,569 |  | 6,019 |  | 1,097 |
Advance from customers | 8,278 |  | 7,535 |  | 1,200 |
Other payables and accruals | 7,413 |  | 7,301 |  | 1,076 |
Total liabilities | 78,672 |  | 81,403 |  | $ 11,407 |
Cost of revenues | 4,513 | $ 654 | 4,598 | ¥ 4,031 |  |
Net loss | 1,367 | 201 | (645) | (3,269) |  |
Net cash (used in)/provided by operating activities | 2,641 | 380 | 2,475 | (3,823) |  |
Net cash provided by investing activities | 1,136 | 164 | (4,148) | (3,821) |  |
Net cash provided by/(used in) financing activities | (6,717) | $ (975) | 3,919 | 6,025 |  |
Variable interest entities |  |  |  |  |  |
Financial information of the group's VIEs |  |  |  |  |  |
Amount of registered capital and PRC statutory reserves of VIEs | 2,000 |  |  |  |  |
Cash and cash equivalents | 2,891 |  | 7,084 |  |  |
Short-term investments | 2,643 |  | 1,612 |  |  |
Accounts receivable, net | 606 |  | 2,480 |  |  |
Prepayments and other current assets | 2,375 |  | 2,208 |  |  |
Investments (non-current) | 2,121 |  | 3,980 |  |  |
Total assets | 17,480 |  | 28,122 |  |  |
Less: Inter-company receivables (Note i) | (4,852) |  | (8,810) |  |  |
Total assets excluding inter-company receivables | 12,628 |  | 19,312 |  |  |
Short-term debt | 5,215 |  | 5,310 |  |  |
Accounts payable | 1,497 |  | 1,944 |  |  |
Advance from customers | 1,212 |  | 1,892 |  |  |
Other payables and accruals | 2,095 |  | 2,473 |  |  |
Total liabilities | 15,558 |  | 25,045 |  |  |
Less: Inter-company payables | (5,150) |  | (12,946) |  |  |
Total liabilities excluding inter-company payables | 10,408 |  | 12,099 |  |  |
Net revenues | 4,335 |  | 6,035 | 6,513 |  |
Cost of revenues | 2,292 |  | 2,557 | 2,471 |  |
Net loss | (495) |  | (119) | (254) |  |
Net income before the deduction of inter-company consulting fee charges | 1,200 |  | 1,500 | 1,500 |  |
Net cash (used in)/provided by operating activities | (1,677) |  | 1,271 | (597) |  |
Net cash provided by investing activities | 4,317 |  | 618 | 349 |  |
Net cash provided by/(used in) financing activities | (6,957) |  | (1,566) | 255 |  |
Service fees paid by VIEs | ¥ 1,700 |  | ¥ 1,700 | ¥ 1,700 |  |
Variable interest entities | Revenue | Revenue from Rights Concentration Risk |  |  |  |  |  |
Financial information of the group's VIEs |  |  |  |  |  |
Revenues as a percent of total | 22.00% | 22.00% | 30.00% | 36.00% |  |

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